Backport: fix wrong access to mFilesAll

[AndyScherzinger]

Backport of #2734 / #2729

[tobiasKaminsky]

👍

[codecov]

Codecov Report

Merging #2744 into stable-3.2.x will increase coverage by <.01%.
The diff coverage is 0%.

@@               Coverage Diff               @@
##           stable-3.2.x   #2744      +/-   ##
===============================================
+ Coverage          6.51%   6.52%   +<.01%     
===============================================
  Files               285     285              
  Lines             28949   28949              
  Branches           4218    4218              
===============================================
+ Hits               1886    1888       +2     
+ Misses            26778   26777       -1     
+ Partials            285     284       -1

Impacted Files	Coverage Δ
...cloud/android/ui/adapter/LocalFileListAdapter.java	0% <0%> (ø)	⬆️
.../third_parties/daveKoeller/AlphanumComparator.java	82.75% <0%> (+2.29%)	⬆️